Added create connection

lib/services/database.dart

@@ -8,7 +8,7 @@ Future<Map<String, dynamic>> loadDb() async {
     'adguard_home_manager.db',
     version: 1,
     onCreate: (Database db, int version) async {
-      await db.execute("CREATE TABLE servers (id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT, connectionMethod TEXT, domain TEXT, path TEXT, port INTEGER, user TEXT, password TEXT, defaultServer INTEGER)");
+      await db.execute("CREATE TABLE servers (id TEXT PRIMARY KEY, name TEXT, connectionMethod TEXT, domain TEXT, path TEXT, port INTEGER, user TEXT, password TEXT, defaultServer INTEGER)");
     },
     onUpgrade: (Database db, int oldVersion, int newVersion) async {
      

lib/services/http_requests.dart

@@ -0,0 +1,47 @@
+// ignore_for_file: depend_on_referenced_packages
+
+import 'dart:async';
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:http/http.dart' as http;
+
+import 'package:adguard_home_manager/models/server.dart';
+
+Future login(Server server) async {
+  try {
+    final result = await http.post(
+      Uri.parse("${server.connectionMethod}://${server.domain}${server.path ?? ""}${server.port != null ? ':${server.port}' : ""}/control/login"),
+      body: jsonEncode({
+        "name": server.user,
+        "password": server.password
+      })
+    );
+    if (result.statusCode == 200) {
+      return {'result': 'success'};
+    }
+    else if (result.statusCode == 400) {
+      return {
+        'result': 'error',
+        'message': 'invalid_username_password'
+      };
+    }
+    else if (result.statusCode == 429) {
+      return {
+        'result': 'error',
+        'message': 'many_attempts'
+      };
+    }
+    else {
+      return {'result': 'error'};
+    }
+  } on SocketException {
+    return {'result': 'no_connection'};
+  } on TimeoutException {
+    return {'result': 'no_connection'};
+  } on HandshakeException {
+    return {'result': 'ssl_error'};
+  } catch (e) {
+    return {'result': 'error'};
+  }
+}